Mercurial > sdl-ios-xcode
annotate src/SDL_fatal.c @ 821:30168104389f
Date: Sat, 14 Feb 2004 14:52:40 +0200
From: "Mike Gorchak"
Subject: Batch of the QNX6 fixes for the SDL
1. Updated readme.QNX
2. Fixed crashes during intensive window updating under fast machines (got over 200 rectangles for update).
3. Fixed double-buffered fullscreen modes, now it works as needed.
4. Fixed Photon detection algorithm.
5. Fixed HWSURFACE update function.
6. Added SDL_PHOTON_FULLSCREEN_REFRESH environment variable support for control refresh rates under Photon.
7. Added 640x400 fullscreen mode emulation via 640x480 (if videodriver not supports original 640x400 mode of course) shifted by 40 vertical pixels from begin, to center it. It's needed for some old DOS games which ran in doubled 320x200 mode.
8. Added available video ram amount support.
8. Added hardware surface allocation/deallocation support if current videomode and videodriver supports it.
9. Added hardware filling support.
10. Added hardware blits support (simple and colorkeyed).
And I've added to testvidinfo test color-keyed blits benchmark (maybe need to add alpha blits benchmark too ?). Currently Photon not supporting any alpha hardware blittings (all drivers lack of alpha blitting code support, only software alpha blitting exist in photon, which is hundreds times slowest than the SDL's one). So I've not added the alpha support. I suppose new QNX 6.3 will have the hardware alpha support, so when it will be done, I'll add alpha support.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sat, 14 Feb 2004 20:22:21 +0000 |
| parents | 5a417d2a8603 |
| children | abb915adb1b0 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
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3 Copyright (C) 1997-2004 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
| 6 modify it under the terms of the GNU Library General Public | |
| 7 License as published by the Free Software Foundation; either | |
| 8 version 2 of the License, or (at your option) any later version. | |
| 9 | |
| 10 This library is distributed in the hope that it will be useful, | |
| 11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 Library General Public License for more details. | |
| 14 | |
| 15 You should have received a copy of the GNU Library General Public | |
| 16 License along with this library; if not, write to the Free | |
| 17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 18 | |
| 19 Sam Lantinga | |
|
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20 slouken@libsdl.org |
| 0 | 21 */ |
| 22 | |
| 23 #ifdef SAVE_RCSID | |
| 24 static char rcsid = | |
| 25 "@(#) $Id$"; | |
| 26 #endif | |
| 27 | |
| 28 /* General fatal signal handling code for SDL */ | |
| 29 | |
| 30 #ifdef NO_SIGNAL_H | |
| 31 | |
| 32 /* No signals on this platform, nothing to do.. */ | |
| 33 | |
| 34 void SDL_InstallParachute(void) | |
| 35 { | |
| 36 return; | |
| 37 } | |
| 38 | |
| 39 void SDL_UninstallParachute(void) | |
| 40 { | |
| 41 return; | |
| 42 } | |
| 43 | |
| 44 #else | |
| 45 | |
| 46 #include <stdlib.h> | |
| 47 #include <stdio.h> | |
| 48 #include <signal.h> | |
| 49 #include <string.h> | |
| 50 | |
| 51 #include "SDL.h" | |
| 52 #include "SDL_fatal.h" | |
| 53 | |
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54 #ifdef __CYGWIN__ |
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55 #define DISABLE_STDIO |
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56 #endif |
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57 |
| 0 | 58 /* This installs some signal handlers for the more common fatal signals, |
| 59 so that if the programmer is lazy, the app doesn't die so horribly if | |
| 60 the program crashes. | |
| 61 */ | |
| 62 | |
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63 static void print_msg(const char *text) |
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64 { |
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65 #ifndef DISABLE_STDIO |
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66 fprintf(stderr, "%s", text); |
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67 #endif |
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68 } |
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69 |
| 0 | 70 static void SDL_Parachute(int sig) |
| 71 { | |
| 72 signal(sig, SIG_DFL); | |
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73 print_msg("Fatal signal: "); |
| 0 | 74 switch (sig) { |
| 75 case SIGSEGV: | |
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76 print_msg("Segmentation Fault"); |
| 0 | 77 break; |
| 78 #ifdef SIGBUS | |
| 79 #if SIGBUS != SIGSEGV | |
| 80 case SIGBUS: | |
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81 print_msg("Bus Error"); |
| 0 | 82 break; |
| 83 #endif | |
| 84 #endif /* SIGBUS */ | |
| 85 #ifdef SIGFPE | |
| 86 case SIGFPE: | |
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87 print_msg("Floating Point Exception"); |
| 0 | 88 break; |
| 89 #endif /* SIGFPE */ | |
| 90 #ifdef SIGQUIT | |
| 91 case SIGQUIT: | |
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92 print_msg("Keyboard Quit"); |
| 0 | 93 break; |
| 94 #endif /* SIGQUIT */ | |
| 95 #ifdef SIGPIPE | |
| 96 case SIGPIPE: | |
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97 print_msg("Broken Pipe"); |
| 0 | 98 break; |
| 99 #endif /* SIGPIPE */ | |
| 100 default: | |
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101 #ifndef DISABLE_STDIO |
| 0 | 102 fprintf(stderr, "# %d", sig); |
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103 #endif |
| 0 | 104 break; |
| 105 } | |
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106 print_msg(" (SDL Parachute Deployed)\n"); |
| 0 | 107 SDL_Quit(); |
| 108 exit(-sig); | |
| 109 } | |
| 110 | |
| 111 static int SDL_fatal_signals[] = { | |
| 112 SIGSEGV, | |
| 113 #ifdef SIGBUS | |
| 114 SIGBUS, | |
| 115 #endif | |
| 116 #ifdef SIGFPE | |
| 117 SIGFPE, | |
| 118 #endif | |
| 119 #ifdef SIGQUIT | |
| 120 SIGQUIT, | |
| 121 #endif | |
| 122 #ifdef SIGPIPE | |
| 123 SIGPIPE, | |
| 124 #endif | |
| 125 0 | |
| 126 }; | |
| 127 | |
| 128 void SDL_InstallParachute(void) | |
| 129 { | |
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130 /* Set a handler for any fatal signal not already handled */ |
| 0 | 131 int i; |
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132 #ifdef HAVE_SIGACTION |
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133 struct sigaction action; |
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134 |
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135 for ( i=0; SDL_fatal_signals[i]; ++i ) { |
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136 sigaction(SDL_fatal_signals[i], NULL, &action); |
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137 if ( action.sa_handler == SIG_DFL ) { |
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138 action.sa_handler = SDL_Parachute; |
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139 sigaction(SDL_fatal_signals[i], &action, NULL); |
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140 } |
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141 } |
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142 #ifdef SIGALRM |
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143 /* Set SIGALRM to be ignored -- necessary on Solaris */ |
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144 sigaction(SIGALRM, NULL, &action); |
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145 if ( action.sa_handler == SIG_DFL ) { |
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146 action.sa_handler = SIG_IGN; |
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147 sigaction(SDL_fatal_signals[i], &action, NULL); |
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148 } |
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149 #endif |
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150 #else |
| 0 | 151 void (*ohandler)(int); |
| 152 | |
| 153 for ( i=0; SDL_fatal_signals[i]; ++i ) { | |
| 154 ohandler = signal(SDL_fatal_signals[i], SDL_Parachute); | |
| 155 if ( ohandler != SIG_DFL ) { | |
| 156 signal(SDL_fatal_signals[i], ohandler); | |
| 157 } | |
| 158 } | |
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159 #endif /* HAVE_SIGACTION */ |
| 0 | 160 return; |
| 161 } | |
| 162 | |
| 163 void SDL_UninstallParachute(void) | |
| 164 { | |
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165 /* Remove a handler for any fatal signal handled */ |
| 0 | 166 int i; |
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167 #ifdef HAVE_SIGACTION |
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168 struct sigaction action; |
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169 |
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170 for ( i=0; SDL_fatal_signals[i]; ++i ) { |
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171 sigaction(SDL_fatal_signals[i], NULL, &action); |
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172 if ( action.sa_handler == SDL_Parachute ) { |
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173 action.sa_handler = SIG_DFL; |
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174 sigaction(SDL_fatal_signals[i], &action, NULL); |
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175 } |
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176 } |
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177 #else |
| 0 | 178 void (*ohandler)(int); |
| 179 | |
| 180 for ( i=0; SDL_fatal_signals[i]; ++i ) { | |
| 181 ohandler = signal(SDL_fatal_signals[i], SIG_DFL); | |
| 182 if ( ohandler != SDL_Parachute ) { | |
| 183 signal(SDL_fatal_signals[i], ohandler); | |
| 184 } | |
| 185 } | |
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186 #endif /* HAVE_SIGACTION */ |
| 0 | 187 } |
| 188 | |
| 189 #endif /* NO_SIGNAL_H */ |